ANALOG DEVICES AD96685/AD96687: Ultra Fast ECL Comparator Data Sheet (Rev D 2002-02-01-) handbook
Datasheet
AD96685/AD96687 are ultrafast voltage comparators. AD96685 is a single comparator with 2.5ns propagation delay; AD96687 is an equally fast dual comparator. Both devices feature open emitter outputs, requiring external pull-down resistors.
